Thermometer



M. PHILIPSEN July 11, 1933.

THERMOMETER Filed Oct. 31, 1930 IN VEN TOR- fl/ewfitz fi/a /PJE/\/ 1 a/4G M W ATTORNEYS.

Patented July 11, 19

13 0 Ill MICHAEL PHILIPS THERMOMETER rear OFFICE an, or vnnnex, DELTMARK Application filed October 31, 1930. "Serial No. 492554.

This invention is an improvement in thermometers, and more particularly in a clinical thermometer.

, In the usual construction the body is triangular in the scale is arranged atof thermometer, cross section, and

one face, which may be considered as thebase', and a portion of the thermometer body adjacent to the base is formed to provide magnification, to enable easy reading of the scale.

It is somewhat difficult,

however, to bring the column of mercury into the exactposition wheret-he magnification 1S operative, since the View of the magnified comm-or mercury is easily lost, turned slightly too far, of the magnifying or posit-1o ifthe thermometer is if it falls ust short 11.

The object of this invention is to provide readily mg elements for visible means in the nature of sightlocatlng the magnifying portion of a. clinical thermometer in exact position relative to the mercury column bore on the line of vision of an observer to facilitate the taking of a reading of the thermom eter.

lVith this and other 0 bjects in View the invention consists in the construction and novel combination of hereinafter, illustrated drawing, and pointed pended hereto, it being parts fully described the accompanying out in the claims apderstood that various changes in the form, proportion, size and minor details of construction withln the scope of the claims,

In the drawing formin may be resorted to without departmg from the splrlt of the lnvention.

g a part hereof Fig. 1 is a front elevation of one embodiment of the thermometer improvement.

Fig. 2 is an end view 10 the thermometer.

Fig. 3 is a view similar parts in another provided with the oking at the top of to Fig. l, with the position, and showing another type of thermometer body.

In the embodiment of the in Fig. 1, the body 1 of as usual, triangular in invention shown the thermometer is cross section, and

the scale indicated at 2, is arranged on one face of the body. The scale 1s usually arranged on an opaque bac k, molded into the body of the thermometer, and the markings of the'scale appear through the adjacent sides of the thermometer body, and through the magnifying portion.

At one end ofthe thermometer usual bulb or mercury magazine hair line? bore leads from the end,,along the c body is the 3, and the for the column: of mercury magazine toward theopposite enter of the seal The markings of the scale are calculated from the bulb Theimprove enlargement 5' mote from the being usually 1 that itm'ay be not communica Upon tiiis enla with rounded end cations are pro site points, anc

and in the usual manner.

the elements of the thermometer body, that when the said marks are brought into exact register With the line of vision of an observer,

the magnifying portion will be in line and 1n accurate for the observer.

of the thermometer with the column of mercury, position to magnify the same The indications 6 may be formed in the glass of the element sired manner.

5 in any suitable or de- In the construction of Fig. 1,

the end of the body remote from the enlargement 5 has a rounded extension 7,'which especially adapts thermometer, t subject matter Serial No. 331

In Fig. 8, th erally at 8, is s the construction for a rectal his arrangement of my copending application ,335, filed on December 27,

e thermometer indicated genubstantially the same as that shown in Fig. 1, having the extension 9 with the indications magazine 11, b omitted. The

10, and the bulb or mercury ut the rounded extension 7 is thermometer shown in Fig. 3

is adapted for general use.

It will be apparent from the showing and description, that the thermometer is of the usual type, of

tube for the me glass, or of a transparent ma terial, including a body having the capillary rcury column, and the bulb or diametrically oppoforming the r V cury col mercury magazine communicating with the tube, and that that portion of the body directly in front of the scale and the column of mercury in the tube is a magnifying lens to facilitate reading of the thermometer.

What is claimed as new is 1. A clinical thermometer having a mercury column and a magnifying portion in front of the column, sighting means for facilitating alining the mercury column and magnifying portion in the line of vision of an observer, said means comprising indicating marks on a part on the thermometer through which the marks are visible, and said marks being arranged at opposite sides of said part in a common plane through the mercury column and magnifying portion such that when said marks register in the line of vision of an observer the mercury column and magnifying portion also register'in said line of vision for clear'reading through said magnifying portion of the length of the merumn. 2. In a clinical thermometer having a mercury column, a scale for indicating the'height of the mercury column, and a magnifying portion to register with the mercury column along the scale in the line of vision of an observer to facilitate determining the height of the mercury column, indicating marks on the thermometer oppositely arranged and 'vis ible through the glass of the thermometer,-

and said marks being so positioned relative to the mercury column and magnifying portion that when they register in the line of vision of an observerthe magnifying portion of the thermometer will also register with the scale and mercury column in said line of vision.

3. A clinical thermometer having a capillary tube for a mercury column, a scale for indicating the height of the mercury in the column, and a magnifying portion to register with the column and the scale in the line of vision of an observer, means to facilitate finding such registration, said means including an extension at the upper end of the thermometer of appreciable width and independent of the capillary tube, and indications on opposite sides of said extensions visible through said extension, and said indications being so positioned relative to the mercury column, magnifying portion, and each other, that when they are in registry in the line of vision of an observer the magnifying portion is also in registry in said line of Vision of an observer for the purposes described.

Signed at Copenhagen, day of July A. D. 1930.

MICHAEL PHILIPSEN.

Denmark, this 9th 

